THE UNITED REPUBLIC OF TANZANIA MINISTRY OF EDUCATION AND CULTURE FORM TWO SECONDARY EDUCATION EXAMINATIONS, 2005 INSTRUCTIONS

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1 TH UNIT RPULI OF TNZNI MINISTRY OF UTION N ULTUR andidate's No FORM TWO SONRY UTION XMINTIONS, IOLOGY TIM: 2 HOURS. INSTRUTIONS 1. This paper consists of sections, and. 2. nswer LL questions from sections and and ON question from section. 3. ll answers for sections and must be written in the space provided for each question. nswers for section should be written in the paper provided. 4. Write your examination number on the top right hand corner of every page. 5. ll writing must be in blue/black ink or ball point pens. 6. ell phones are not allowed in the examination room FOR XMINR'S US ONLY QUSTION NUMR SOR INITILS OF XMINR TOTL This paper consists of 11 printed pages 1

2 STION nswer LL questions from this section. ach question carries 10 marks. 1. Questions (i) - (x) are multiple choice items. Select the best answer in each case and write its letter in the box provided. (i) Which of the following organelles is involved in respiration? ell membrane. Nucleus. hloroplast. Mitochondrion. Lysosome. (ii) One of the following is not a part of a microscope; Stage. ye piece. oarse adjustment knob. Light. Mirror. (iii) Gaseous exchange in human lungs occurs in the; lveoli. Mouth Nose. ronchioles Trachea (iv) Which of the following parts transports water within a plant? Phloem. Xylem. ambium. pidermis. Pith. (v) The following group of organisms belong to the same kingdom; at, Whale, moeba. uglena, Yeast, Liverwort. Grasshopper, at, Fish. moeba, Housefly, Mosquito. Paramecium, at, Moss. 2

3 (vi) HIV/IS can result from the following behaviour. bstaining from sex and use of condoms. Rape, alcoholism and drug abuse. Faithfulness in marriage. voiding multiple sexual partnership. Using contraceptive pills. (vii) food sample X turned blue-black when iodine solution was added on to it. The conclusion is that sample X contained: Non reducing sugar. Reducing sugar. Starch. Protein. Lipid. (viii) patient having blood group can receive blood of a donor with blood group; only. only. O only. or. or O. (ix) Which of the following does not secrete digestive enzymes? Oesophagus. Pancreas. Stomach. Salivary glands. Ileum. (x) The body is protected against pathogens by: one marrow. rythrocytes. Thrombocytes. Lymph. Leucocytes. 3

4 2. The following statements are either TRU or FLS. In the space provided write TRU if the statement is true and FLS if the statement is false. The first one is done for you. Living organisms are made up of cells TRU (i) lood groups are arranged on the basis of presence or absence of plasma and anti-bodies (ii) Fungi have chloroplasts but lack N (iii) The valve separating the right auricle and right ventricle is called tricuspid valve. (iv) ll types of bacteria cause diseases in human beings. (v) Salting and freezing are some of the methods of food preservation. (vi) Synovial fluid reduces friction between joints. (vii) Root hairs increase the surface area of plant roots for water absorption. (viii) The nucleus is the basic unit of life. (ix) The ileum is the first part of the small intestine. (x) Inhaled air has high content of oxygen. 3. The following are matching items. Match the phrase or term in list with that in list by writing its letter against appropriate position in the space provided alongside List as shown in the worked example (x). xample x: List List Y Present in all plant cells X cell membrane Y cell wall List (i) Product of anaerobic respiration in plants. (ii) Turgor pressure. (iii) arries oxygenated blood from lungs to the heart. (iv) Joints between the bones of cranium. (v) Removal of undigested materials from the human body. (vi) group of organisms which can interbreed and produce fertile offspring (vii) The process of releasing energy in the presence of oxygen. (viii) The liquid part of blood. (ix) nd products of digestion of fats and oil. (x) ontrol the closing and opening of the stomatal pore. 4

5 List. Fatty acids and glycerol. Fatty acids and glycerine. Moveable joints. Immoveable joints. Species F. Genus G. Lactic cid H. thanol I. orpuscles J. Plasma K. pidermal cells L. Guard cells M. Pulmonary artery N. Pulmonary vein O. Ingestion P. gestion Q. erobic respiration R. naerobic respiration S. Force exerted against a cell wall T. Pressure due to flaccidity 5

6 STION This section consists of five (05) short answer questions. You are required to answer LL questions from this section. Read the questions carefully before writing the answers in the spaces provided. ach question carries 10 marks. 4. (a) Outline four (04) differences between plant cells and animal cells. (i) PLNT LLS (i) NIML LLS (ii) (ii) (iii) (iii) (iv) (iv) (b) (c) What is First id? List four (04) components of a First id Kit. (i) (ii) (iii) (iv) 6

7 (d) riefly outline three methods of providing First id to victims of fainting. (i) (ii) (iii) 5. (a) ifferentiate between the following: (i) Osmosis and iffusion (ii) Gaseous exchange and respiration (b) raw a well labelled diagram of a generalized plant cell as seen under a light microscope. 7

8 6. If the body does not get enough of any of the food substances, certain disorders occur. Such disorders are generally called deficiency diseases. (a) omplete the table below; Food substance lacking in diet alcium (ii) Vitamin 1 Iodine Iron (vi) Vitamin eficiency diseases (i) Night blindness (iii) (iv) (v) Pellagra (vii) (b) Name three (3) elements which for carbohydrates. (i) (ii) (iii) 8

9 7. Study figure X below carefully and answer the questions that follow. andidate's No Figure X (a) (i) What is the name of an organism in Figure X above? (ii) In which kingdom does the organism in Figure X belong? (b) Identify structures labelled. 9

10 (c) List any four (4) economic importance of the organism in Figure X. (i) (ii) (iii) (iv) 8. biologist collected blood samples from an athlete at intervals to determine the amount of lactic acid accumulation. The following were the results obtained. TIM IN MINUTS Table 1 ONNTRTION OF LTI I (Mg/100cm 3 ) Study Table 1 above and answer the following questions. (i) Name the process which leads to the accumulation of lactic acid. (ii) In which animal tissue is lactic acid formed? (iii) What are the effects of accumulation of lactic acid in the body? 10

11 (iv) From the results shown in Table 1 above, which range of time represents the period of recovery? (v) Write a word equation for anaerobic fermentation in plants. STION This section consists of two guided essay questions. You are required to answer only ON question. ach question carries 20 marks. 9. Write an essay on food preservation using the following guidelines. efinition of food preservation Methods used in food preservation xamples of food preserved in each method. 10. Write an essay on gonorrhea using the following guidelines. ausative agent. Ways of transmission Symptoms Parts of the body affected ure and preventative measures 11

THE UNITED REPUBLIC OF TANZANIA MINISTRY OF EDUCATION AND VOCATIONAL TRAINING FORM TWO SECONDARY EDUCATION EXAMINATION, 2007 INSTRUCTIONS

THE UNITED REPUBLIC OF TANZANIA Candidate's No. MINISTRY OF EDUCATION AND VOCATIONAL TRAINING FORM TWO SECONDARY EDUCATION EXAMINATION, 2007 0033 BIOLOGY TIME: 2½ HOURS INSTRUCTIONS 1. This paper consists